It is given that 1/R = 2/P +3/Q
Make Q the subject of the above formula. [show your working]
數學問題(10分)
2007-08-29 5:51 am
回答 (2)
2007-08-29 5:57 am
✔ 最佳答案
(1/R) = (2/P) +(3/Q)(1/R) - (2/P) = 3/Q
(P-2R)/PR = 3/Q
PR/(P-2R) = Q/3
Q= (3PR)/(P-2R)
2007-08-29 5:59 am
1/R = 2/P +3/Q
(1/R)*PQR=(2/P+3/Q)*PQR
PQ=2QR+3PR
Q(P-2R)=3PR
Q=3PR/(P-2R)
(1/R)*PQR=(2/P+3/Q)*PQR
PQ=2QR+3PR
Q(P-2R)=3PR
Q=3PR/(P-2R)
參考: myself
收錄日期: 2021-04-13 13:10:17
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070828000051KK06003